Signal arm



S55-L 16, 1952 M. c. MAGARIAN 2,610,603

SIGNAL ARM Filed July 25, 1950 Masz'cb C Magaz'z'an ATTCRNEYS Patented Sept. 16, 1952 v PATENT* "FFIC'E l n SIGNAL y Masick Magarianf I m n ApplicationJqly `25, 1950,'fser1v1" l175g8|21 v geminis. (Cline-Q43).

...'Ihisinventionis vdirectedk t-o, and it is an ob- Figf.f.5. is afcross `section on linef5-*;5 of'Figsl. ject to provide, an improved semaphore type sig- Referring now more particularly to the :characv4v nal for trucks, or the like, to indicate the drivers terslof reference onathe drawings, -thesig'naL intention to. turn or stop. f ofza generally rknown semaphore itype; including?` 1 Another object of the invention is to providea 5 ai'o'tarwmount Izadapted; forfattachmentfto a. semaphore type signal, as above, whichincludes vehicle,'-.and/having:a-'verticallyswingablesemaw a novel,'illuminai'iedsignal farm; such armrbeing p'horeE armZ'projectin-g therefrom and a'dapted'tov tubula'nof light transmitting materiaL and on be". disposedinxselectivepositions:of adjustment opposite. 'sidesbeingformed with a l'multiplicity toindicat-e.` thefintendediturnor stop; the semae: ofivlaterially'.inwardly;'projectingfnubs.shapedwasy 10 phor arm.2 bein-g-ac'tuated'byacord (not shown). f pri'sxiiswhereby; tol'reflec't the light,iromla globe which attaches to an eye 3. i

atl'thelinner lendiof @the arm, laterally outwardly A tubularrsignal arm 4.,.isxed'in therethrough for itsfullflength. The signal arm with, fa'nd" projects lengthwise from, the .'outer is thus effectively illuminated for use atnight. end of the semaphore arm 2, being supported top .LA' further. object .of .the invention is lto prov-ide- 15 and bottom by -ametallic pointer-5. which is `like-f` said*` prismsfinla novelforni andarrangementi wise :secured .to,=.=and projects from, said .sema'e which produces-maximum'andeven illumination* phorearin'.-. -V s j f1 ofthesignalarm 'foritsfulllength,-andiassuresl The tubular 4signal arm 4 is'of 'coloredlight.V of 4relatively` high intensity reflectionvof light.v transmitting material; suitably amber incolor, laterally outwardly from the arnfl;"thelformff` and: preferably of plastic..-4 f

the "pris'rnsbein'gsuch :that: the signal arm, when "1'Ihe`rr tubular,` signalarrn ."4is;co`r'r`1pri'sed' o'fftwof'. illuminated, is highly visible in all operative posilongitudinal half sections of. channel' form, each tions, and from diiferentangles from the front such section being indicatedgenerally atl-6.??? orrear of ithe vehicle. y Each `longitudinalhalf sectionf'i of the' signal "An additional object of theV invention is to ar'mz-A 'mandes a substantianyxnat siuewau 1;r provide a signal arm, as aforesaid, wherein the sai'diside? walls-ltacingto' the front and rear, renubs which form the prisms are integral with spectively,"andlengthwise converging slightly the correspon-ding side of said arm; the latter an outward direction. preferably being molded o'f plastic. The tubular vsignal arm .4 isIilluminat-ed from f'zItIis also' a'nob-ject of .the invention to .provide 30 within by an'electric globe 8 disposed in a 'globe afs'ignal ,arm which is,-des igned for ease and housing -9 ait the outer end of the semaphore arm economy: oi manufacture. i s

ffhStillanother object of. the'invention is to .prooutwardlyfwith respect tothe longitudinal center vide a practical and reliable signal arm, and yet line I0 of light projection lengthwise in the signalz one which will be exceedingly effective for the arm 4 from said globe 8. purpose for which it is designed. In order to assure of even and full illumination These objects are accomplishd by means of of the signal arm 4 from end to end thereof, and such structure and relative arrangement of parts further to produce effective or high intensity as will fully appear by a perusal of the following light reection laterally outwardly through the specification and claims. 40 side walls 'l of the signal arm, each side wall has In the drawings: a multiplicity of novel, prism forming nubs H Fig. 1 is a side elevation of a semaphore-type projecting laterally inwardly therefrom.

vehicle signal embodying the present invention. As the nub arrangement on each side wall 1 is Fig. 2 is an enlarged fragmentary diagrammatic the same, a description of such arrangement with plan view showing one of the prism forming nubs respect to one of said walls will suflice. as projecting laterally inwardly from the corre- 'Ihe nubs Il on each side wall 1 are integral sponding side wall of the signal arm. therewith and project laterally inwardly there- Fig. 3 is an enlarged fragmentary sectional from in rows I2 which are concentric to the plan of one side wall of the signal arm showing globe 8; the rows I2 being spaced substantially a plurality of the laterally inwardly projecting, equi-distantly for the full length of the signal prism forming nubs. arm 4. The prism forming nubs Il of adjacent Fig. 4 is an enlarged fragmentary inner face rows l2 are staggered, as clearly shown in Fig. 4, elevation of one of the sid-e walls of the signal and the nubs increase in height from the innerarm, showing the arrangement of the prism formmost to the outermost of the rows I2; i. e. the ing nubs thereon. nubs of each successive row in an outward direc- 2. The flat, longitudinal side walls 1 thus converge.

tion are somewhat higher than the nubs of the next innermost row.

Each nub II has a flat front face I3, and to dispose all of said faces I3 in right angle facing relation to the globe 8, the prism forming nubs II are not only arranged in the rows I2 concentric to said globes, but additionally each such face I3 is canted, as clearly shown in Fig. 2.

The rear face I4 of each prism forming nub` Il is convexly arcuatein. vertical and horizontal planes.

When the signal is in use at night, with the tubular signal arm 4 illuminated internally by the globe 8, the above described arrangementof the nubs II functions as follows, on each of the side walls 1, to produce an even'illumination';

throughout the length of said signalrarmland to create a high intensity reflection of the lightv laterally outwardly through said side wall also-7 for its full length.

The-light raysfromtha globe` 8 'project `lengthwise-L in'. an. outward?. direction' in -the 'signall arm 4`,. striking. the; iiatzfrontfaces I3 .ofthe prism forminginubs'll inieachirow I2, .as shownfin Fig. 3; eachirowof nubsbeing assured rof "direct lighty ray'recepti'oniby: reason4 of: the; fact rtliat :the: side: walls 1 converge inanioutward directiompandfurther." by.` reason 1' o'f.` the Vfact thatytlietnub's- I=I a-re ofz. progressively z greater height inthe' rows; fromthe;A innert end `toward the router end of the;4

signal arm.

Asi the.` flat .fronti faces .f 13Y of: the nubs; I'I' are iny right.anglexfacingrelatin tothe globe 3;'. a plurality of rays;. as indicated: diagrainniatically irnrEgi 2;.' enter: each' prism. forming.: nulo IIv throughfthe facev I 3;'. strike' the: conve'xly:arcuate;l rear face I4, and thence reflect laterally 'out-f wardlylthrougli the corresponding 'side wall l in multpledirections; This results in 'hi'gliintene sity illumination of each" side-Wall.lforfitsffullA length, which illuminationrv is visibleftothe driver of.: another' vehicle); irrespective of.. the adjusted? positionzof trie-signal.v j'

The prism forming. nubs- II I -thus:catchi'and1reectthef light laterallyathrough the; side 'walls. in. an: improved; Vor .more highly; eiicient4 manner;

the n design of` thehubsr beingsuc'zlfl'` that" the? refl j practical-4 andi reliabley signaling; jdevic'ej andfone* which',L byf reason of its? high visibilitygmakeszforf. safety.

' file of this-patent: 'y Y From the foregoing description it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention, as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device,

still in practice such deviations from such detail Y may be resorted toy as do not form a departure from the spirit of the invention, as dened by they-appended claims. 'v Y 'y I-Iaving"'thus described' the invention', the fol lowing is claimed as new and useful, and upon which Letters Patent are desired:

j 1. In a signal which includes a tubular signal arm yof light transmitting material having a sub- AVstantiallyvertical side wall, and an electric globe rnubs beingf disposed in a circularline-fconc'entric to lthe; axisfof the-globe:v

2; Inasignalwhich includes an'elongatedf=tubu" lar signal arm of/light.transmittingl nu'aterialha'v-f ing:asubstantially'vertical'sidefwallrarid arr-elec?-A- tricfglobe' Vmounted to project' light into thai-armi lengthwisefrom one. :endg` thereof a m1i1tiplicityfof nubson and:projecting,laterallyfinward-fronr said side. walll and ormingi prisms operativefto,L

deflect flight vprojected in the 'armirom the :'globe; laterally out through thenside -wall'l thepri'sm's being. iii-rows extending: transverselylof:V said sidei wall; andV -spaced- -lengthwiseithereof;v the-'prismsZ ofT theA successiverowsoutwardh7V relativeffto: th'efglobe havingprog-ressively greaterlaterally-inea ward'projectionI f Y MA ASICKGfMAGARI-AN REFERENGEsp-.CITED The following references lvofrordl initle 

